A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

A twin Earth in our solar system could destabilize orbits, spark rivalry, or lead to interplanetary cooperation.

There are quite a few other places we might find life in the solar system, including dwarf planets like Ceres. Ceres is ...

Asteroid ‘Families’ Reveal Hidden Histories and Impact Risks across the Solar System ...

The asteroid belt may seem permanent, but it is far from static. Its slow decline reveals a more violent past when more ...

A NASA mission, IMAP, and two more spacecraft that will study space weather are traveling through space atop a single SpaceX ...

Federal funding is about to run out for 19 active space missions studying Earth's climate, exploring the Solar System, and ...

This invisible boundary is known as the heliosphere. It's the endpoint beyond which our Sun does not have any reach or power.

Astronomers have observed a massive growth rate in a free-floating rogue planet that’s gobbling up gas and dust at a record rate of 6.6 billion tons per second.

Object 3I/ATLAS is now too far from Earth to aim a telescope at, but prior observations showed some unusual behavior. The anomalous nature of the object led astrophysicist Avi Loeb to apply a thought ...

The discovery of the Kuiper Belt fundamentally reshaped our understanding of the solar system's architecture and population, revealing a far larger and more complex system than previously imagined.